Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The height of temperatures is seen during January and December, averaging a high-temperature of 27.3°C (81.1°F).Heat index
The heat index in December is evaluated at a hot 31°C (87.8°F). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Humidity
November and December, with an average relative humidity of 81%, are the least humid months in Três Arroios.Rainfall
In Três Arroios, Brazil, in December, during 21.7 rainfall days, 149mm (5.87") of precipitation is typically accumulated. In Três Arroios, Brazil, during the entire year, the rain falls for 208.2 days and collects up to 1438mm (56.61") of precipitation.Snowfall
January through June, September through December are months without snowfall.Daylight
The month with the longest days in Três Arroios is December, with an average of 13h and 48min of daylight.On the first day of December in Três Arroios, sunrise is at 05:25 and sunset at 19:10. On the last day of the month, sunrise is at 05:36 and sunset at 19:27 -03.
Sunshine
In Três Arroios, the average sunshine in December is 8.3h.UV index
January and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 6 in December translates into the following instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
What time of the year is the hottest in Três Arroios?
What is the temperature in December in Três Arroios?
What are the least humid months in Três Arroios?
What is the average humidity in December in Três Arroios?
How many days does it rain in December in Três Arroios?
When it does not snow in Três Arroios?
When are the longest days in Três Arroios?
What is the average length of the day in December in Três Arroios?
When are sunrise and sunset in December in Três Arroios?
How long on average sun shines in December in Três Arroios?
What is the month with the highest UV index in Três Arroios?
How high is the UV index in December in Três Arroios?
Average temperature in December
Três Arroios, Brazil
- Average high temperature in December: 27.3°C
The warmest months (with the highest average high temperature) are January and December (27.3°C).
The month with the lowest average high temperature is June (17.8°C).
- Average low temperature in December: 16.8°C
The months with the highest average low temperature are January and February (16.9°C).
The coldest month (with the lowest average low temperature) is July (9.1°C).
Average pressure in December
Três Arroios, Brazil
- Average pressure in December: 1011.4mbar
The month with the highest atmospheric pressure is July (1019.9mbar).
The month with the lowest atmospheric pressure is December (1011.4mbar).
Average wind speed in December
Três Arroios, Brazil
- Average wind speed in December: 8.6km/h
The windiest month (with the highest average wind speed) is October (10km/h).
The calmest month (with the lowest average wind speed) is February (8.3km/h).
Average humidity in December
Três Arroios, Brazil
- Average humidity in December: 81%
The month with the highest relative humidity is June (88%).
The months with the lowest relative humidity are November and December (81%).
Average rainfall in December
Três Arroios, Brazil
- Average rainfall in December: 149mm
The wettest month (with the highest rainfall) is October (160mm).
The driest month (with the least rainfall) is August (77mm).
Average rainfall days in December
Três Arroios, Brazil
- Average rainfall days in December: 21.7 days
The month with the highest number of rainy days is January (24.3 days).
The month with the least rainy days is August (11.9 days).
Average snowfall days in December
Três Arroios, Brazil
- Average snowfall days in December: 0 days
The months with the highest number of snowfall days are July and August (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Três Arroios, Brazil
- Average daylight in December: 13h and 5min
The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 24min).
- Average sunshine in December: 8h and 2min
The month with the most sunshine is November (Average sunshine: 8h and 24min).
The month with the least sunshine is June (Average sunshine: 7h and 12min).
Average sunshine days in December
Três Arroios, Brazil
- Average sunshine days in December: 7.6 days
The month with the most sunshine days is August (17.2 days).
The month with the least sunshine days is February (4.5 days).
Average UV index in December
Três Arroios, Brazil
- Average UV index in December: 6
The months with the highest UV index are January and December (UV index 6).
The months with the lowest UV index are April, May, June and July (UV index 4).
Average cloud cover in December
Três Arroios, Brazil
- Average cloud cover in December: 42
The months with the most cloud cover are January and February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Três Arroios, Brazil
- Average visibility in December: 8km
The months with the highest visibility are April, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January, February, March and May (7km).
Três Arroios, Brazil
Weather forecast for your location
2. Allow the app to use your location
